linux-kernel - Re: [PATCH] dma-buf: Delete the DMA-BUF attachment sysfs statistics

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Message-ID: <YOlADy6gdrUDNltl@kroah.com>
Date:   Sat, 10 Jul 2021 08:37:03 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Hridya Valsaraju <hridya@...gle.com>
Cc:     daniel@...ll.ch, Sumit Semwal <sumit.semwal@...aro.org>,
        Christian König <christian.koenig@....com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
        kernel-team@...roid.com, john.stultz@...aro.org, surenb@...gle.com
Subject: Re: [PATCH] dma-buf: Delete the DMA-BUF attachment sysfs statistics

On Fri, Jul 09, 2021 at 10:10:24PM -0700, Hridya Valsaraju wrote:
> The DMA-BUF attachment statistics form a subset of the DMA-BUF
> sysfs statistics that recently merged to the drm-misc tree.
> Since there has been a reported a performance regression due to the
> overhead of sysfs directory creation/teardown during
> dma_buf_attach()/dma_buf_detach(), this patch deletes the DMA-BUF
> attachment statistics from sysfs.
> 
> Fixes: bdb8d06dfefd (dmabuf: Add the capability to expose DMA-BUF stats
> in sysfs)
> Signed-off-by: Hridya Valsaraju <hridya@...gle.com>
> ---

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>